MCQ
Which of the following solid salt on heating with solid $K_2Cr_2O_7$ and conc. $H_2SO_4$ orange red vapours are evolved which tum aquous $NaOH$ solution yellow ?
- A$NaBr$
- ✓$NaCl$
- C$NaNO_3$
- D$NaI$
✓
Answer
Correct option: B.
$NaCl$
b
$NaC{l_{\left( s \right)}} + {K_2}C{r_2}{O_7}_{\left( s \right)} + {H_2}S{O_4}$ $\left( {{\text{few drop}}} \right)\xrightarrow[{reaction}]{{Non - redox}}$ $\mathop {Cr{O_2}C{l_2}}\limits_{\left( {orange{\kern 1pt} red{\kern 1pt} vapours} \right)} {\mkern 1mu} \uparrow + HO$
$NaC{l_{\left( s \right)}} + {K_2}C{r_2}{O_7}_{\left( s \right)} + {H_2}S{O_4}$ $\left( {{\text{few drop}}} \right)\xrightarrow[{reaction}]{{Non - redox}}$ $\mathop {Cr{O_2}C{l_2}}\limits_{\left( {orange{\kern 1pt} red{\kern 1pt} vapours} \right)} {\mkern 1mu} \uparrow + HO$
$Cr{O_2}C{l_2} + OH_{\left( {aq} \right)}^ - $ $\to $ $\mathop {CrO_{4\left( {aq.} \right)}^{2 - }}\limits_{Yellow{\kern 1pt} solution} {\mkern 1mu} + C{l^ - } + 2{H_2}O$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
$B{\left( {OH} \right)_3} + NaOH \to NaB{O_2} + Na\left[ {B{{\left( {OH} \right)}_4}} \right] + {H_2}O$
→How can this reaction is made to proceed in forward direction?
Which of the following has a linear structure
Which one of the following reactions is not an example of redox reaction
$H_2S$ is more acidic than $H_2O,$ due to
→The total number of atomic orbitals in fourth energy level of an atom is
Product of the reaction is
Invertase brings about the conversion of
Value of velocity constant for first order reaction is $3.46 \times {10^{ - 3}}\,{\min ^{ - 1}}$, the time for half change is ........ $\min.$
→A reversible chemical reaction having two reactants in equilibrium. If the concentrations of the reactants are doubled, then the equilibrium constant will
What is the major product.of the following reaction ?
→$C{H_3} - C \equiv N\xrightarrow[{E{t_2}O}]{{C{H_3}Mgl}}\xrightarrow{{{H_3}{O^ \oplus }}}$